Storage-battery plate



Patented Sept. 25,-

STORAGE-BATTERY trim Application filed June 1,

This invention relates to a plate for a storage battery and has for its principal object the provision of a storage battery plate grid which can be easily cast from two co-acting 5 molds which will not become frozen to the casting so as to injure its skeleton structure.

Another object of the invention is to provide grid which will efficiently lock the active material'in place. Y

A further object of'the invention is to pro vide a storage battery plate in which the entire skeleton of the gridstructure willbe covered bythe active material.

Other objects and advantages reside in the i5 detail construction of the invention, which is designed for simplicity, etlicienc'y and economy. These'will become more apparent from the following description.

In the following detailed descriptionof the invention, reference is had to the accour panying drawing which forms a parthercof,

Like nun'ierals refer to like parts in all views of the drawing and throughout the description. 25 In the drawing:

Fig. 1 is a face View of the-grid employed in-my invention. Fig. 2 is a; vertical section through the grid taken on the line 2-2, Fig. 1. 4 g

Fig. 3 is a horizontal section through the grid, taken on the line 3-8, Fig. 1. i

Fig. 4. is a magnified View of a portion of the grid. 7 1

' F ig. 5 is a magnified cross section through the gridwith the active materialin place.

The complete grid of my improved storage. battery plate si illustrated iuFig. 1 and is arranged to be cast from lead; The casting is formed with a raised border or frame 10, from which pr-znects the usual terminal lug '11.. The skeleton structure of the grid is of less thickness than the frame 10 and 00111 prises a series of vertical bars 12,'inter-connected at uniform distances bya series of relatively narrower horizontal bars 13'. The spacing of the bars 12 and 13 is such as to form a series of uniform, elongated," rectangular cells 1 1. a V I The casting is f-ormedfrom two co-acting molds (not shown) which are illustrated,

described, and'claimed in applicants foo-I iending application,"The molds contact with opposite sides mold has. lugs in the form of truncated pyramids which form alternate cells, in

of the casting and each v 1926. stea No. 112,841.

the completed grid so that each cell will be of greater area at one side of the grid than at the other side thereof, and in each face of the grids, the smaller faces of the cells will alternate with the larger faces,

as illustrated inFigs. 1 and a. This construction necessitates -the bars 13 being rhomboidal in cross section and alternately parallel, as shown in Fig. 2.

The vertical bars 12 are similarly rhomboidal in. cross section and are alternately parallel throughout the same horizontalplane. They alternate, however, throughout their vert cal lengths as to their cross sectional angles at each horizontal seriesfof cells, owing to the alternate placing of the pyramidal cells, as, clearly illustrated in Fig 1 and 4.

Since the ske eton is of less thickness than the frame of the grid, the active material, shown'in place at 15,'Fig. 5, will be flush with the frame andwill completely cover and conceal the skeleton. The active mate rial 15 is prevented from falling through a cell in one'direction'by the decreasing angle of thecell sides and from falling through in. the otl fr direction by the oi 'erla 'iping flange of l(' we material 16 which is formed over each of the bars 12 and-l3 in the skeleton.

While a specific form. of the improvement has been described and illustrated herein, it is desired to be understood that thesame may be varied, ithin the scope ofthe ap- "pended clainis .'wi thout departing from the spirit of the invention.

Having thus described thein-vention, what I claim and desire secured by; Letters Patent is: I g V 1. In a storage battery plate a'gridhaving-a series of parallel, intersecting. bars,

said barsbeing!rhomboidal in cross section, the cross sections of adjacent bars being at an angle to each other andthe crosssections of alternate bars being parallel to each other.

2. A grid-for storage-battery plates com prising a frame; a series of parallel hori zontal bars in said frame, said bars being arranged so that in vertical section the faces of adjacentbars incline toward as one face 'of'the grid is approached: and the faces of alternate bars lie parallel.

3. A grid for storage battery plates comfeach other prisinga frame; aseriesfof parallel hori-- zonta'llbars in said frame, said bars being arranged so that in vertical'seetion the opposed faces of adjacent bars incline toward each other as one face of the grid is approached and the faces of alternate bars lie parallel; and a series of Vertical bars inter- 5 connecting said horizontal bars; two faces I of each of said vertical bars being in a plane parallel to the plane of-said frame,

the remaining two faces of each alternate horizontal bar being parallel with each other and at an angle to the two faces of the bar 10 therebetween. V In testimony whereof, I aflix my signature.

JASPER N. DAVIS. 

